src/broadcom/drm-shim/v3d.c

   1 /*
   2  * Copyright © 2018 Broadcom
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #include <stdio.h>
  25 #include <sys/ioctl.h>
  26 #include "drm-uapi/v3d_drm.h"
  27 #include "drm-shim/drm_shim.h"
  28 #include "v3d.h"
  29 #include "v3d_simulator_wrapper.h"
  30
  31 bool drm_shim_driver_prefers_first_render_node = false;
  32
  33 static struct v3d_device_info devinfo;
  34 struct v3d_shim_device v3d = {
  35         .devinfo = &devinfo
  36 };
  37
  38 struct v3d_bo *v3d_bo_lookup(struct shim_fd *shim_fd, int handle)
  39 {
  40         return v3d_bo(drm_shim_bo_lookup(shim_fd, handle));
  41 }
  42
  43 int
  44 v3d_ioctl_wait_bo(int fd, unsigned long request, void *arg)
  45 {
  46         /* No need to wait on anything yet, given that we submit
  47          * synchronously.
  48          */
  49         return 0;
  50 }
  51
  52 int
  53 v3d_ioctl_mmap_bo(int fd, unsigned long request, void *arg)
  54 {
  55         struct shim_fd *shim_fd = drm_shim_fd_lookup(fd);
  56         struct drm_v3d_mmap_bo *map = arg;
  57         struct shim_bo *bo = drm_shim_bo_lookup(shim_fd, map->handle);
  58
  59         map->offset = drm_shim_bo_get_mmap_offset(shim_fd, bo);
  60
  61         drm_shim_bo_put(bo);
  62
  63         return 0;
  64 }
  65
  66 int
  67 v3d_ioctl_get_bo_offset(int fd, unsigned long request, void *arg)
  68 {
  69         struct shim_fd *shim_fd = drm_shim_fd_lookup(fd);
  70         struct drm_v3d_get_bo_offset *get = arg;
  71         struct v3d_bo *bo = v3d_bo_lookup(shim_fd, get->handle);
  72
  73         get->offset = bo->offset;
  74
  75         drm_shim_bo_put(&bo->base);
  76
  77         return 0;
  78 }
  79
  80 void
  81 drm_shim_driver_init(void)
  82 {
  83         shim_device.bus_type = DRM_BUS_PLATFORM;
  84         shim_device.driver_name = "v3d";
  85
  86         drm_shim_override_file("OF_FULLNAME=/rdb/v3d\n"
  87                                "OF_COMPATIBLE_N=1\n"
  88                                "OF_COMPATIBLE_0=brcm,7278-v3d\n",
  89                                "/sys/dev/char/%d:%d/device/uevent",
  90                                DRM_MAJOR, render_node_minor);
  91
  92         v3d.hw = v3d_hw_auto_new(NULL);
  93         v3d.devinfo->ver = v3d_hw_get_version(v3d.hw);
  94
  95         if (v3d.devinfo->ver >= 42)
  96                 v3d42_drm_shim_driver_init();
  97         else if (v3d.devinfo->ver >= 41)
  98                 v3d41_drm_shim_driver_init();
  99         else
 100                 v3d33_drm_shim_driver_init();
 101 }